Is CVE-2026-42335 actively exploited?

No active exploitation of CVE-2026-42335 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42335 be exploited remotely?

Yes. CVE-2026-42335 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42335?

CVE-2026-42335 has a CVSS score of 6.3 (MEDIUM).

HOME VULNERABILITIESCVE-2026-42335

MEDIUM

CVE-2026-42335

CWE-918Published: May 26, 2026· Updated: May 27, 2026

6.3

CVSS v3.1

Official Description

MaxKB is an open-source AI assistant for enterprise. Prior to 2.8.1, MaxKB v2.8.0 and prior are vulnerable to a server-side request forgery (SSRF) bypass in the OSS file service URL fetch (chat/api/oss/get_url) endpoint. The vulnerability exists due to inconsistent URL parsing between the urlparse validation function and the requests HTTP client, allowing attackers to access internal network services. This vulnerability is fixed in 2.8.1.

NVD Source

Technical Analysis

CVE-2026-42335 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X